Authors(s) and Affiliation(s)

Abstract

During a palaeoflood study of the Llobregat River in Catalonia, analysis of Cs 137 was carried out on slackwater flood deposits to obtain an improved flood chronology for the most recent flood sediments. The onset of measured caesium activity in the sedimentary profiles permitted the deposits to be divided between those from floods that occurred before the mid-1950s and those from events after this period. Combining the information derived from the slackwater flood stratigraphy, the minimum discharge estimates associated with the flood deposits, Cs 137 analysis and the instrumental peak discharge series, it was possible to identify the particular flood events responsible for the majority of the slackwater flood units